{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.898084,-0.439825,0.000000,0.000000,0.284302,-0.580520,0.762999,0.000000,-0.334642,0.683309,0.648925,0.000000,-2137407.621286,4364396.492780,4117029.209312,1],    "boundingVolume": {    "region": [2.026134,0.706059,2.026266,0.706281,0.000000,8.366057]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/12_1820505.b3dm"}}}